This is the type of audio that has the minutest of details. Uncompressed audio refers to a recorded track in its purest form without any technical intervention. It’s important to note though that lossless audio and uncompressed audio are not the same. The term “lossless” is being used quite loosely ever since Apple’s announcement of lossless audio coming to Apple Music on both iOS and Android. Difference between Uncompressed and Lossless Audio The 24-bit WAV file has a higher range of frequencies indicating more details and better audio quality. #Convert audionote file to mp3 320kbps#In the 128kbps MP3 spectrogram, you can see the cut-off frequency is lower than the 320kbps MP3 file indicating the quality of the audio is lower on the audio file with a lower bitrate and bit depth. As you can see, the details above a certain frequency are cut off in the MP3 audio files but are retained in the WAV audio. The waveforms you see above do a good job depicting the difference between WAV and MP3 audio. Audio streaming services also use a format known as AAC which is slightly better than MP3 but still compressed. The reason we say may is because even some audiophiles claim they cannot differentiate between 320kbps MP3 and a lossless format like FLAC, which we’ll talk about later. However, MP3 is a compressed audio format which basically means you’re losing out on some information that you may otherwise hear on a lossless audio file. This format is popular since it’s widely supported across multiple devices without any compatibility issues. Most audio files you download from the internet these days are generally in MP3 format. In order to reduce the size of these audio files, they have to be compressed and that’s where they lose the lossless tag. A high bitrate means more data, which in turn means high file sizes. Ideally, this is the bitrate and sample rate required to hear “lossless” audio. WAV files generally have a bitrate of 1,411kbps and a sample rate of 44.1KHz. Traditionally, CDs or Compact Discs have music files burnt onto them in the WAV format which you may have heard of before.
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